package main

import "fmt"

func main() {
	mp := make(map[int]int)
	ch := make(chan struct{})
	mp[1] = 100
	fmt.Println("end....")
	for i := 1; i < 50; i++ {

		v, ok := mp[1]
		if ok {
			fmt.Println("v=", v)
		}
	}
	<-ch

}
